https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89903
Bug ID: 89903 Summary: [9 Regression] ICE: in convert_op, at config/i386/i386.c:2102 with -O2 -march=skylake Product: gcc Version: 9.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: i686-pc-linux-gnu Created attachment 46066 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46066&action=edit reduced testcase This triggers also after PR89848 and PR89827 fix. Compiler output: $ i686-pc-linux-gnu-gcc -O2 -march=skylake testcase.c during RTL pass: stv testcase.c: In function 'foo': testcase.c:10:1: internal compiler error: in convert_op, at config/i386/i386.c:2102 10 | } | ^ 0x721607 dimode_scalar_chain::convert_op(rtx_def**, rtx_insn*) /repo/gcc-trunk/gcc/config/i386/i386.c:2102 0x117cc0c dimode_scalar_chain::convert_insn(rtx_insn*) /repo/gcc-trunk/gcc/config/i386/i386.c:2171 0x117d064 scalar_chain::convert() /repo/gcc-trunk/gcc/config/i386/i386.c:2412 0x117d064 scalar_chain::convert() /repo/gcc-trunk/gcc/config/i386/i386.c:2396 0x117db1c convert_scalars_to_vector /repo/gcc-trunk/gcc/config/i386/i386.c:2478 0x117db1c execute /repo/gcc-trunk/gcc/config/i386/i386.c:2596 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. $ i686-pc-linux-gnu-gcc -v Using built-in specs. COLLECT_GCC=/repo/gcc-trunk/binary-latest-i686/bin/i686-pc-linux-gnu-gcc COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-270053-checking-yes-rtl-df-extra-i686/bin/../libexec/gcc/i686-pc-linux-gnu/9.0.1/lto-wrapper Target: i686-pc-linux-gnu Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++ --enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra --with-cloog --with-ppl --with-isl --with-sysroot=/usr/i686-pc-linux-gnu --build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu --target=i686-pc-linux-gnu --with-ld=/usr/bin/i686-pc-linux-gnu-ld --with-as=/usr/bin/i686-pc-linux-gnu-as --disable-libstdcxx-pch --prefix=/repo/gcc-trunk//binary-trunk-270053-checking-yes-rtl-df-extra-i686 Thread model: posix gcc version 9.0.1 20190401 (experimental) (GCC)